First you have to own a computer (as opposed to the cheaper DVD or BRD player)

Everyone has a computer already.

Second, there's the electricity used to download and burn.

Same applies to TV/dvd player, and in a comparison like this they cancel out

Third there's the time spent finding, downloading, and burning.

This is where the non-tech mainstream have a problem, yes.

Fourth there's the stress and worry associated with doing something illegal, whether it be a moral or fear-based stress.

Only slight, considering the odds of being caught.

The internet is the new gutenburg machine and the only reasons there isn't a universal platform where anyone can instantly watch any movie ever made are licensing disagreements (ie lawyers, laughing hysterically, rolling in piles of cash while huffing gold dust and cocaine off platinum busts of themselves) and the pride and idiocy of the studios in thinking they can get away with ignoring or not understanding the potential of the internet, instead sticking to the VHS model.

Netflix is close, but it doesn't have every movie ever made, and is limited by country. Hey assholes, the internet doesn't have borders! Stop region-locking things!